﻿<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>div层提示效果</title>
    <script type="text/javascript" language="JavaScript">
        var div_x,div_y;
        function div6()
        {
            this.display=display;
        }
        //实现层和表格的动态创建
        function display()
        {
            document.write("<table align=center><tr><td><button style='width:100px;height:30px;font-size:12px;border:1px solid #A4B3C8;background-color:green;' type=button onclick=document.getElementById('div1').style.display='block' onfocus=this.blur()>div留言</button></td></tr></table>");
            document.write("<div  id='div1' style='font-size:12px;position:absolute;display:none;text-align:center;overflow:visible'>");
            document.write("<div style='position:absolute;top:expression((body.clientHeight-300)/2);left:expression((body.clientWidth-200)/2);width:200px;height:180px;background-color:#dbdbdb;border:1px solid #cccccc;'>");
            document.write("<table width=200 height=20 bgcolor=green onmousedown='div_x=event.x-parentNode.style.pixelLeft;div_y=event.y-parentNode.style.pixelTop;setCapture();' onmouseup='releaseCapture();' onmousemove='divMove(this.parentNode)' style='cursor:move;'>");
            document.write("<tr align=center>");
            document.write("<td align=left>提示:div6</td>");
            document.write("</tr>");
            document.write("</table>");
            document.write("<span style= cursor:hand onclick=this.parentNode.parentNode.style.display='none';><br>发生了严重的错误...<br>[返回]</span>");
            document.write("  </div>");
            document.write("</div>");
        }
        //实现层的拖移
        function divMove(obj)
        {
            if(event.button==1)
            {
                var divX=obj.clientLeft;
                var divY=obj.clientTop;
                obj.style.pixelLeft=divX+(event.x-div_x);
                obj.style.pixelTop=divY+(event.y-div_y);
            }
        }
        //创建并显示层
        var mydiv=new div6();
        mydiv.display();
        
    </script>
</head>
<body>

</body>
</html>